Severe Weather and Heavy Rainfall in the Ohio Valley; Heat Continuing in the South and Southeast

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians tonight. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Chattanooga, Lovell Field (KCHA)

Lat: 35.03°NLon: 85.2°WElev: 679ft.

Partly Cloudy

77°F

25°C

Humidity 82%
Wind Speed S 5 mph
Barometer 30.06 in (1016.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 11 Aug 10:53 pm EDT
Extended Forecast for

Signal Mountain TN

  • Tonight

    Tonight: A 20 percent chance of showers between 2am and 3am.  Partly cloudy, with a low around 70. West wind around 5 mph becoming calm.

    Low: 70 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 87. Heat index values as high as 95. West wind around 5 mph.

    High: 87 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am.  Partly cloudy, with a low around 71. West wind around 5 mph becoming calm.  Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 88. Heat index values as high as 97. West wind around 5 mph.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and hot, with a high near 90. Calm wind becoming west around 5 mph in the afternoon.

    High: 90 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 91.

    High: 91 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers between 2am and 3am. Partly cloudy, with a low around 70. West wind around 5 mph becoming calm.
Wednesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Heat index values as high as 95. West wind around 5 mph.
Wednesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Partly cloudy, with a low around 71. West wind around 5 mph becoming calm. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Heat index values as high as 97. West wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 72. Calm wind.
Friday
Mostly sunny and hot, with a high near 90. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 72. Calm wind.
Saturday
Sunny and hot, with a high near 91.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
Mostly sunny and hot, with a high near 91.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny and hot, with a high near 93.
Monday Night
Mostly clear, with a low around 72.
Tuesday
Sunny and hot, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Signal Mountain TN
 35.15°N 85.35°W (Elev. 1709 ft)
10:26 pm EDT Aug 11, 2026
11pm EDT Aug 11, 2026-6pm EDT Aug 18, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database